Arthur pillsbury dodge



Patented Sept. 27, |898.

A. P. DODGE.

' CONDENSER.

(Application med Decjl, 1897.)

2 Sheets-Sheert l.

(No Medel.)

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No. 6||,s5a. Patented sept. 27, |898.

A. P. Donal-:

counsusen.

(Application iiledDec. 1` 1897.)

(No Model.) 2 Sheete-Sheet 2.

NTTED STATES PATENT FFICE@ CONDENSER.

SPECIFICATION forming part of Letters Patent No. 611,358, dated September 27, 1898.

Application led December 1, 1897. Serial No. 660,414. (No model.)

To @ZZ whom it may concern:

Be it known that I, ARTHUR PILLsBURY DODGE, a citizen of the United States, residingin the city, county, and State of New York, but formerly of Chicago, Illinois, have invented certain new and useful Improvements in Condensers, of which the following is a speciiication.

Myinvention relates to motor-cars for streetca-r use, and concerns more especially a condenser system placed in the top of the car in connection with a main and supplemental or false roof.

In the accompanying drawings, Figure 1 represents a cross-sectional view of the car embodying my improvements. Fig. 2 is a detail view showing the head of the condenser with the steam-pipe leading thereto.

Fig. 3 is a detail view of the condenser, partly in section, with the roof shown on one side. Fig. 4 is an elevation at one end of the car.

In the drawings the-car A is shown with the seats B in the center thereof and facing in opposite directions. The condenser is arranged below the ordinary roof of the car and extends over the spaces at the sides of the car, so as to leave sufficient head-room for the passengers. The condenser C comprises a series of inner and outer tubes D D, the inner tubes being air-tubes, such as heretofore used by me in my former condenser systems, while the outer tubes are steam-tubes and communicate with the interior of headboxes E at the ends of the car, which headboxes are in turn connected with the exhaust of the cylinders through pipes F.. The inner air-tubes extend through these head-boxes to communicate with the outside air, so that the steam confined in the annular space between the inner and outer tubes is subjected to the condensing influence of the air. The condenser has a central depending portion over the seats,while its side portions are higher up to provide a proper amount of space for the movement of the passengers. The condenser is placed below the plane of the ordinary roof G, and this roof may be in the form of a grating or open-work to allow escape of hot air from among the outer tubes, while the main roof I-I, which serves as a protection to the passengers against the elements, is arranged below the lower edge of the condenser and is of a shape to conform thereto-that is,

its central portion depends below the plane of the side portions. This main roof serves to catch the rain or snow and to direct it to a suitable drain-channel after it has acted upon the exposed tubes of the condenser. The steam-supply pipe, as shown in Fig. 2, projects into the head-box. I may provide a main roof H of sectional form, one section being used on each side of the car, as shown in Fig. 3, and the condenser may be made in two sections, one for each side of the car. The water of condensation may be taken from the boxes by any suitable drains, such as those shown in Letters Patent of the United States No. 585,624, dated June 29, 1897.

In Fig. 3 the condenser is shown slightly modified, it being made of one section and the main roof I-I being made of two sections,

with an upturned liange 7L at the inner edge of each section, leaving a space between for the passage of air, and this space is covered by an inclined shield which will prevent the fall of moisture or rain down through the opening.

. What I claim as my invention is- 1. A condenser for motor-cars and the like having a-central depending portion, and side portions in a higher plane with tubes extending between the' head-boxes and with a roof extending below the condenser, substantially as described. p

2. A condenser comprising head-boxes, a series of tubes connecting them and a roof below the condenser, the center of the condenser and roof being lower than the sides, substantially as described.

3. In combination in a motor-car, the seats Sol arranged centrally thereof, a condenser having a depending central portion and elevated side portions to provide head-room over the aisle, substantially as described. v

4. In combination in a car having the seats IOO drainage-roof below the condenser, the upper hood covering the said space, substantially car-roof being of open-Work, substantially as as described. 1o described. In testimony whereof I afiix my signature 6. In combination, a condenser comprising in presence of two Witnesses. 5 head-boxes and connecting-tubes, a roof be- ARTHUR PILLSBURY DODGE.

10W the condenser comprising side portions fitnessesz with npturned flanges a1; their inner edges HORACE F. I-IODGES,

with a space between the said flanges, and a WVM. N. THOMAS, Jr. 

